Editing Antipope John XXIII (section)

== Fictional depictions ==
John is portrayed by [[Steven Waddington]] in the 2016 television series ''[[Medici: Masters of Florence]]''.<ref>{{cite web|title=Medici: Masters of Florence|url=https://www.imdb.com/title/tt5057130/|website=Internet Movie Database|date=9 December 2016|access-date=24 December 2016}}</ref>

The 1932 thriller ''[[Safe Custody]]'' by [[Dornford Yates]], references John. Listing the members of an objectionable family, a character in the story says, "Then we come to his nephew—a promising lad of fifteen. He lies, steals, smells, assaults the servants and abuses any animal which he is satisfied will not retaliate. If Gibbon may be believed, Pope John the Twenty-third as a stripling must have resembled him".

In 1983, American political satirist and novelist [[Richard Condon]] wrote ''A Trembling Upon Rome'', a novel of historical fiction about the life of Baldassare Cossa.

Russian writer Dmitry Balashov wrote the novel ''Baltazar Kossa'' ({{lang|ru|Бальтазар Косса}}) about Antipope John XXIII.